Question

B = P + Prz solve for r

Answer 1

(B-P) / Pz = r

Explanation:

B = P + Prz

Subtract P from each side

B-P = P -PPrz

B-P = Prz

Divide each side by Pz

(B-P) / Pr = Prz/Pz

(B-P) / Pz = r